The purpose of our study was to determine the sensitivity of semicircular canal afferents to linear acceleration in intact animals prepared to preserve the physical integrity of the end organ and nerve. The responses of physiologically identified lateral and vertical canal afferents to static head tilts are described, and the implications of these findings, especially with regard to positional nystagmus, are discussed.
Get full access to this article
View all access options for this article.
References
1.
EstesMSBlanksRHIMarkhamCH: Physiological characteristics of vestibular first-order canal neurons in the cat: I. Response plane determination and resting discharge characteristics. J Neurophysiol1975; 38: 1232–1249.
2.
LedouxA: Activite electrique des nerfs des canaux semi-circulaires, du saccule et de l'utricule chez la grenouille. Acta Otorhinolaryngol Belg1949; 3: 335–349.
3.
LowensteinO: Physiology of vestibular receptors, in BrodalAPompeianoO: Progress in Brain Research, vol 37; Basic Aspects of Central Vestibular Mechanisms. Amsterdam, Elsevier Publishing Co, 1972; pp 19–30.
4.
GoldbergJMFernandezC: Responses of peripheral vestibular neurons to angular and linear accelerations in the squirrel monkey. Acta Otolaryngol1975; 80: 101–110.
5.
LeeBBMandlGSteanJPB: Micro-electrode tip position marking in nervous tissue: A new method. Electroencephalogr Clin Neurophysiol1969; 27: 610–613.
6.
CurthoysISMarkhamCH: Convergence of labyrinthine influences on units in the vestibular nuclei of the cat: Natural stimulation. Brain Res1971; 35: 469–490.
7.
WilsonVJWylieRMMarcoLA: Synaptic inputs to cells in the medial vestibular nucleus. J Neurophysiol1968; 31: 176–185.
8.
BarberHOWrightG: Positional nystagmus in normals. Adv Otorhinolaryngol1973; 19: 276–285.
9.
SchuknechtHE: Pathology of the Ear. Cambridge, Mass, Harvard University Press, 1974.